lesson
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Imagine you have 3 blue blocks and 3 red blocks. That's a double fact: 3+3=6!
What happens if a friend gives you just one more block?
What is a Near Double?
A near double is an addition problem where the two numbers are next-door neighbors on the number line, like 3+4 or 2+3.
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How can your easy doubles facts help you solve these neighbor facts in a snap?
The Doubles Plus 1 Strategy
To solve a near double like 3+4, find the smaller number and think of its double fact first: 3+3=6.
Since 4 is just 1 more than 3, add 1 to your doubles answer: 6+1=7.
📊Interactive diagram
Can we try this trick with bigger numbers within 10? Let's check 4+5.
Worked Example: 4 + 5
First, find the smaller number, which is 4. Its double is 4+4=8.